2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chloro-phenol 2553-71-1 Bromchlorophenol blue Bromochlorophenol blue NSC7816 Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S,S-dioxide(8CI9CI) CAS 2553-71-1

Purity 97%+In StockPharmaceutical Standards
CAS No.2553-71-1
Molecular FormulaC19H28Br2Cl2O5S
Molecular Weight599.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chloro-phenol
2553-71-1
Bromchlorophenol blue
Bromochlorophenol blue
NSC7816
Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S,S-dioxide(8CI9CI) CAS 2553-71-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 599.20 g/mol gives 2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chloro-phenol 2553-71-1 Bromchlorophenol blue Bromochlorophenol blue NSC7816 Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S,S-dioxide(8CI9CI) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chloro-phenol 2553-71-1 Bromchlorophenol blue Bromochlorophenol blue NSC7816 Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S,S-dioxide(8CI9CI) (CAS 2553-71-1), molecular formula C19H28Br2Cl2O5S and molecular weight 599.20 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 2-bromo-4-[3-(3-bromo-5-chloro-4-hydroxy-phenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chloro-phenol 2553-71-1 Bromchlorophenol blue Bromochlorophenol blue NSC7816 Phenol,4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-6-chloro-, S,S-dioxide(8CI9CI) (C19H28Br2Cl2O5S) contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 599.20 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC19H28Br2Cl2O5S
Molecular Weight599.20 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl/Br-containing
Sulfur Atoms1

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